Need to install air suspension dump valve

u can use ABS solenoid from JY.

 

What I have seen done and theres a couple differant ways to do it. You could install a electric controled pilot valve that will be hooked into your leveling valve. You could hook the wires up to the pto engage light so when pto is engaged it activates the pilot valve and starts dumping air you will have to run a fused ign power to pilot valve and ground wire through pto indicator switch as this is a ground control on pto indicator light.. Or you could get a air controlled pilot valve hooked in to leveling valve and tie sensing air line in to your Pto air feed same idea as the electric. Third option for auto dump would be air controlled pilot valve hooked into leveling valve but hook the control air line into your hoist lever. The above ways will be automatic driver does'nt have to remember to throw a switch it will start dumping suspension automatically whenever pto or hoist is engaged depending on how you chose to hook it up. If you use a pilot valve you wont have to worry about air loss as the pilot valve will block the air supply to the leveling valve and open a port to allow air in suspension to be dumped out. I had to install a similar system in to our three axle float only I chose a manual push button valve mounted at rear of trailer by becon switch just for simplicity not for auto dump option.

 

We use to install a dump system in Freightliner cab overs, it worked off the back-up switch, as some drivers could not control the clutch with the air-ride cab bouncing we used a solinoid electric over air on the frame tapped into the airline for the cab suspension air, we had an override switch mounted in the dash so he could manually dump the system we used a diode. off the back-up switch.
You would only need an electric switch, on the dash a solinoid in the frame tapped into the suspension air supply hose.
Just a thought!

 

A dump valve for a trailer plumbed in after the leveling valve would work. Then it's just a matter of a switch in the dash and wiring power to it.
The other option is to replace your leveling valve with one that is meant to dump and plumbing an air switch in. This would be the way I would do it. It might cost a bit more up front but you won't be replacing electric dump valves ever couple years.

 

No. A trailer dump valve blocks the air coming from the leveling valve and dumps the air on the bag side. Spread axle trailers with rear axle dumps all set up this way.